@article{fdi:010065498, title = {{T}he {C}asuarina {NIN} gene is transcriptionally activated throughout {F}rankia root infection as well as in response to bacterial diffusible signals}, author = {{C}lavijo, {F}. and {D}iedhiou, {I}. and {V}aissayre, {V}irginie and {B}rottier, {L}. and {A}colatse, {J}. and {M}oukouanga, {D}aniel and {C}rabos, {A}mandine and {A}uguy, {F}lorence and {F}ranche, {C}laudine and {G}herbi, {H}assen and {C}hampion, {A}ntony and {H}ocher, {V}al{\'e}rie and {B}arker, {D}. and {B}ogusz, {D}idier and {T}isa, {L}. {S}. and {S}vistoonoff, {S}ergio}, editor = {}, language = {{ENG}}, abstract = {{R}oot nodule symbioses ({RNS}) allow plants to acquire atmospheric nitrogen by establishing an intimate relationship with either rhizobia, the symbionts of legumes or {F}rankia in the case of actinorhizal plants. {I}n legumes, {NIN} ({N}odule {IN}ception) genes encode key transcription factors involved in nodulation. {H}ere we report the characterization of {C}g{NIN}, a {NIN} gene from the actinorhizal tree {C}asuarina glauca using both phylogenetic analysis and transgenic plants expressing either {P}ro{C}g{NIN}::reporter gene fusions or {C}g{NIN} {RNA}i constructs. {W}e have found that {C}g{NIN} belongs to the same phylogenetic group as other symbiotic {NIN} genes and {C}g{NIN} is able to complement a legume nin mutant for the early steps of nodule development. {C}g{NIN} expression is correlated with infection by {F}rankia, including preinfection stages in developing root hairs, and is induced by culture supernatants. {K}nockdown mutants were impaired for nodulation and early root hair deformation responses were severely affected. {H}owever, no mycorrhizal phenotype was observed and no induction of {C}g{NIN} expression was detected in mycorrhizas. {O}ur results indicate that elements specifically required for nodulation include {NIN} and possibly related gene networks derived from the nitrate signalling pathways.}, keywords = {actinorhiza ; biological nitrogen fixation ; mycorrhiza ; nodule inception ; plant-microbe signalling ; root hair deformation ; root nodule symbioses}, booktitle = {}, journal = {{N}ew {P}hytologist}, volume = {208}, numero = {3}, pages = {887--903}, ISSN = {0028-646{X}}, year = {2015}, DOI = {10.1111/nph.13506}, URL = {https://www.documentation.ird.fr/hor/fdi:010065498}, }